I have released PyFolder Python application. That is a shell that presents Python scripts as icons and can launch them. No more need to wrap everything inside sis application packages (at least for simple applications), or use cumbersome Python shell as a laucher.
You can use it also to download scripts (and in fact other files too) from Web to the current folder. PyFolder looks like a virtual folder in your standard Application Shell. You can choose to open any folder, and run the scripts it contains.
You can also use custom icons for specific scripts easily. Just copy e.g. a file myscript.jpg to the same folder where myscript.py exists. PyFolder application will scale and save the thumbnail automatically.